Cutting-machine.



B. J. GUNDLAGH. CUTTING MACHINE. APPLIUATION FILED MAY 4, 1914.

1,1 19,506, Patented Dec.1,1914.

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UNITED sTATEs PATENT oFFCn BEND J'. GUNDLACH, OF BELLEVILLE, ILLINOIS.

CUTTING-MACHINE.

' To all 'a0/10m imag/concern:

Be it known that I, BENQ .Il GUNDLACH, a citizen ofthe United States,residing at Belleville, Illinois, have invented a certain new and usefulImprovement in Cutting- Machines, of which the following is a full,

clear, and exact descriptiom suchas will enable others skilled in the,art tolwhich it appertains to make and use thesame.

T his invention relates to cutting machines, and has forits mainobjectwtoprovide a manually operated machine thatwill` sucycessfully cutasbestos shingles, which is small and compact enough to enable it to becarried around by a workman who 1s ,shingling a roof, and which can bemanufactured and sold at a low enough price to enable a carpenter orsimilar workman to purchase one for his individual use.

.Another object is to provide a machine of the character' described thatwill cut an asbestos shingle clean and even and also puncture holes inshingles, and still another is to provide an efficient hand-operatedcutting machine that comprises only a few parts of simple design thatare not apt to break or get out of adjustment when the machine is usedto cut a hard and tough brous sub` vtical transverse sectional viewtaken on the .line 4-1 of Fig. 2: and Fig. L5 isa vertlcal transversesectional view taken on' the line 5-5 of Fig. 1. y

Referring to the drawings which illustrate the preferred form `of myinvention, A and B designate two'cutters or knife blades that aredisposed diametrically opposite each other. and which are provided withsubstantially' V-s'haped cutting edges that form cuts in both faces` orsides of the sheet being operated on whenthe cutters are closed orbrought together. The cutter A, which I will term the stationary cutter,

is mounted in the .upper edge of a stationary cutter holder 1, thatconsists of a long,

rigid bar, and the cutter B,`which I will termthe 'movable cutter, ismounted in the lower edge of a movable cutterholder 2 that is arrangeddirectly above the stationary cutter holder 1. Said' cutter holders areheld in vertical alinement witheach other by two -pairs of verticallydisposed guides 3 secured to theopposite end portions ofl i,

the stationary holder land embracing the speciacation of Lettersratent.patented Dec, 1, .19ML i' Application sied May 4, 1914. serial Nassaaez.u f

movable holder 2.k I also prefer to provideone of .the cutter holderswith auxiliary guide pins 4 thatproject from Aone edge of same' andenter the holes 5 in theedge of the other 'cutter holder, as shown inFi'gQ 5, said guide pins being long enough so that they will not becompletelywithdrawn from the holes 'when the cutters are open orseparated. The movable cutter is normally held in its elevated positionby means'of f `coil springs G that surround the guid'epins Zl, and whichare arranged, between the .cutter holders adjacent the ends of same. The

`movable cutter holder 2 is providedwith stops or Iabutments 7 that arearranged between the vertically disposed guides 3 at each end of themachine` and thus prevent .the movable cutter holder 2from movinglongitudinall'yfof the stationarv cutter holder, said abutmen'ts "i",preferably` con-y sisting of pins that pass transversely through thecutter holderu2, asgshown in i j 9o The actuating mechanismv for themovable Figs. 3 and 4.

cutter consists of two levers 8 and 9 pivotvertically disposed guides 3andprovided'at their lower ends with rams 11 that bear against theupperedge of the movable cut- Vally connected at 10 tothe upper ends of theter helder 2 vand force itjdownwardlv-when said levers are swung in onedirection. as

shown in Fig. 2.` The movement of said le 4 vers in the oppositedirection shifts `the cams 11 intosuch a position thatthe springs 6 canraise the holder 2 andthus separate the cutters. o The lever 8 isprovided with an operating handle 8a. and vmovement is transmitted from`saidjlever to the lever 9 by means of links 12"that arelpivotallvconnectedAto said" levers in such a manner that the cams 11will:

exert uniform downward pressure on the movable cutter holder 2 when thehandle 8a is actuated in one direction.` f

The machine is provided with a base or lees that-held the knife.lifeless Pf right position, and in the form of my invention herein shownsaid legs are formed by iianges 3a on the lower ends of the bars thatconstitute the vertically disposed guides 3. The cutters A and B fitsnugly in grooves that eXtend longitudinally of the cutter holders, andif desired, pins 18 can be passed transversely through the holders andcutters, as shown in Figs. 3 and i so as to `is inclined upwardlyslightly from its inner toward its outer end so that the sheet as willrest upon the upper edge of the stationary cutter A and on the outer endportion of the work table, as shown in Fig. 3, and thus cause themovable cutter B to force the sheet downwardly onto the stationarycutter A; in other words, thework table 14 is so designed that there issufficient space between the underside of the sheet and the top surfaceof the work table at a point adjacent to the cutters to permit themovable cutter to force the sheet downwardly far enough to cause thesharp edge of the stationary cutter to sink into the underside of thesheet, thus forming `cuts in both sides ot the sheet ai.

YA` stop l5 is arranged at one end of the work table so as to preventthe sheet from slipping longitudinally off the ywork tablev after thesheet has been cut. this being a very desirable feature in a machinethat is used for cutting shingles, owing-to the fact that the machine isgenerally used onthe roof of a building and is arranged at such an anglethat the portion of the shingle lying on the work table` would slidelongitudinally olf of `saine after the shingle has been severed if thework, table were not provided with a stop or similar device 15. Thevertically disposed guides 3 are preferably so designed that the upper.ends of same form stops or abutments 16 thatk coperate with the linksl2 so as to limit the movement of the movable cutter holder 2V in bothdirections, as clearly shown in Figs. l and 2. At oneend of the machineis an inclined support 17 for holding a shingle yin which itis desiredto punch a hole, said support being arranged in such a positionk that apunch 18 on the Y lever 9 will pass through the shingle on the supportand enter a hole 18a in said support when the cutters are closedas shownin Fig. 2.

A machine of the construction alcoveV described will successfully outasbestos shingles and other fibrous sheet material that is hard andtough :'the machine is small compact enough to" enablefit to' be'carriedarund a roof by a workman who is shingling the roof and themachine can be manufactured at a low enough cost to make it practicablefor a workman to purchase one -for his individual use. There is nodanger of the cutters springing or spreading apart during the cuttingoperation, as would be apt to result with a ,portabler machine oit thetype now generally used for cutting light-weight sheet metal in whichthe knives or cutters travel past each other and shear the material,and, as the machine comprises only a few substantial parts of simpledesign, there is little danger of the machine breaking or getting out ofadjustment when it is in use.

Having thus described my invention, what l claim is: l. cutting machinecomprising a stationary cutter holder and a movable cutterholderthatconsist of long rigid bars arranged in vertical alinement witheach other and provided in their meeting edges with cutters whose edgesare disposed diametrically opposite each other, vertically disposedguides that embrace vthe movable cutter holder, levers pivotallyconnected to said guides and provided with cams that bear against theupper edge of the movable cutter A holder when said levers are moved inone' tudinally when it is depressed, the upper" ends of said guidesforming abutments or stops that coperate with said links to limit themovement of the movable cutter holder in both directions, and means Jforholding said cutter holders in an upright position.

2. A cutting machine comprising a stationary cutter holder provided witha laterally projecting work table whose outer end is bent upwardly toform an abutment that guides the work, a cutter in said holder whoseedge supports the sheet that is being operated on, a movable cutterholder provided with a cutter that is arrangeddirectly above thestationary cutter, a manually operated actuating device that comprisescams which exert downward pressure on the posite end portions ofk themovable cutter holder, resilientmeans for elevating the movable cutterholder and normally holding the cutters separated, `and verticallydisposed guides that embrace the movable cutter holder.

3.4 A cutting machine comprising a stationary cutter holder and amovable cutter holder, each of which consists of a long rigid such aposition that said punch will engage same.

4. A cutting machine comprising a stationary and a movable cutterholder, each of which consists of a long rigid bar, sharpedged cuttersset in the meeting edges of said holders, vertically disposed guidesconnected to the end portions of the stationary holder and embracing themovable holder, legs on the lower ends of said guides that hold saidcutter holders in an upright position, levers pivotally connected to theupper ends of said guides and provided with cams that bear against theupper edge ofthe movable cutter holder, one of said levers having anoperating handle, links pivotally connected to said levers for causingthem to more in unison, and a rigid work table carried by the stationarycutter holder and projecting laterally from one side of same, thesupporting surface of said work table lying in a plane slightly lowerthan the plane of the cutting edge of the stationary cutter.

5. A cutting machine comprising a stationary and a movable cutterholder, each of which consists of a long rigid bar, cutters Copies ofthis patent may be obtained for set in the meeting edges of saidholders, vertically disposed guides connected to the end portions of thestationary holder and embracing the movable holder, legs on the i lowerends of said guides that hold said cutter holders in an uprightposition, levers pivotally connected to the upper ends of said guidesand` provided with cams that bear against the upper edge of the movable1 cutter holder, .one of said levers having an holder and projectinglaterally "5 signature in the presence of two witnesses, v

this 30th day of April, 1914.

y BENO J. GUNDLACH. Witnesses:

WM. P. GUNDLACH, S. N. Gruivonaorr.

Washington, D. C.

